Just a note,, NC, I-77 mm 28 to mm 23, both N/S one lane will be closed from 10pm to 5am for a while. They are adding a toll lane.
If you are taking I-85 and need to get to I-40, take exit 17 (I-85) and take US-321. Four lane road. Just beware of the drop of 65mph to 55mph when you get to a few miles of I-40.